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Nephrite
Nephrite

Andesine
Andesine



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Nephrite
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Andesine

Nephrite and Andesine Optical Properties

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Optical Properties

Luster

Vitreous, Greasy
Vitreous

Pleochroism

None
colorless.

Dispersion

0.010.70
0.005 1
👆🏻

Transparency

Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.600-1.6271.543-1.564
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

monoclinic
Triclinic

Birefringence

0.0270.007-0.011
0 0.296
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Clarity

Translucent
Transparent

Nephrite and Andesine Optic Character

Nephrite and Andesine optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Nephrite and Andesine Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Nephrite and Andesine optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character. Andesine has Biaxial/+ character.

Nephrite and Andesine Transparency

Similar to their colors, Nephrite and Andesine transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Nephrite is Translucent while Nephrite is Translucent in appearance.